Question 1
Question detail
What is a catalyst and how does it affect the rate of a chemical reaction?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Rate of reaction
Question
What is a catalyst and how does it affect the rate of a chemical reaction?
Answer
A catalyst is a substance that increases the rate of a chemical reaction without beingconsumed in the process. It achieves this by providingan alternative reaction pathway with a lower activation energy.
Explanation
This question tests the understandingof the definition and function of a catalyst in chemical reactions. The answer clearly defines what a catalyst is and explains its role in alteringreaction rates, aligningwith the learningobjective.
Common mistake
Misunderstanding catalyst usage
Students think a catalyst is consumed during the reaction and therefore must be added in excess
Explain that a catalyst is not used up; it is only temporarily involved in the reaction pathway and can be recovered unchanged after the reaction
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